body {
    width: 7.5rem;
    height: 100%;
    background-color: #FFF;
}

body:after {
    position: relative;
}

* {
    margin: 0;
    padding: 0;
}

a{
	color: inherit;
	text-decoration:none
}

.logo{
    margin: auto;
    margin-top: 3.36rem;
    width: 1.48rem;
    height: 1.86rem;
}

.logo::before{
    content: "";
    display: block;
    background-image: url(../images/app/logo.png);
    background-repeat: no-repeat;
    background-size: 100% auto;
    width: 1.48rem;
    height: 1.48rem;
}

.logo::after{
    content: "";
    display: block;
    background-image: url(../images/app/text.png);
    background-repeat: no-repeat;
    background-size: 100% auto;
    margin-top: .16rem;
    width: 1.48rem;
    height: .26rem;
}

.mask{
    position: fixed;
    z-index: 99;
    height: 100%;
    width: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    top: 0;
    left: 0;
    display: none;
}

.mask::before{
    margin: auto;
    margin-top: 1.08rem;
    content: "";
    display: block;
    background-image: url(../images/app/tissue.png);
    background-repeat: no-repeat;
    background-size: 100% auto;
    width: 3.98rem;
    height: .77rem;
}

.mask::after{
    position: absolute;
    top: 0.38rem;
    right: .7rem;
    content: "";
    display: block;
    background-image: url(../images/app/arrow_rt.png);
    background-repeat: no-repeat;
    background-size: 100% auto;
    width: .56em;
    height: .69rem;
}
